<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
          </el-breadcrumb>
          <el-card class="box-card">
            <div id="chart1" style="width: 100%; height: 400px"></div>
          </el-card>
    </div>
</template>
<script>
import * as echarts from 'echarts'
export default {
  data () {
    return {
      // 需要合并的数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created () {

  },
  mounted () {
    this.drawChart()
  },
  computed: {
  },
  methods: {
    async drawChart () {
      // 基于准备好的dom，初始化echarts实例  这个和上面的main对应
      const myChart = echarts.init(document.getElementById('chart1'))
      // 指定图表的配置项和数据
      const { data: res } = await this.$http.get('reports/type/1')
      if (res.meta.status !== 200) {
        return this.$message.error('获取报表数据失败！')
      }
      console.log(res.data)
      const data = res.data
      // 合并
      const option = Object.assign(this.options, data)
      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(option)
    }

  }
}
</script>
<style lang="less" scoped>

</style>
